From 7306abf3fc40f841c252778e7e10009f16c6e16a Mon Sep 17 00:00:00 2001
From: Peter Smith <peter.b.smith@fujitsu.com>
Date: Tue, 28 Nov 2023 09:32:24 +1100
Subject: [PATCH v3] GUC names - docs

---
 doc/src/sgml/sources.sgml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/src/sgml/sources.sgml b/doc/src/sgml/sources.sgml
index 06d995e..45ad706 100644
--- a/doc/src/sgml/sources.sgml
+++ b/doc/src/sgml/sources.sgml
@@ -539,6 +539,14 @@ Hint:       The addendum, written as a complete sentence.
    </para>
 
    <para>
+    In messages containing configuration variable names, do not include quotes
+    when the names are visibly not English natural words, such as when they
+    have underscores or are all-uppercase or have mixed case. Otherwise, quotes
+    must be added.  Do include quotes in a message where an arbitrary variable
+    name is to be expanded.
+   </para>
+
+   <para>
     There are functions in the backend that will double-quote their own output
     as needed (for example, <function>format_type_be()</function>).  Do not put
     additional quotes around the output of such functions.
-- 
1.8.3.1